package day1205_4;

public class Stu {
    public static void main(String[] args) {
        Stu  zs=new Stu();
        zs.stuId=4009;
        zs.study();
        System.out.println(zs.name);
    }
    private int stuId;//属性(成员变量)
    private String name;
    public  void study(){//行为
    }
}


